[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.23' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 775.642547] JFS: discard option not supported on device executing program executing program [ 775.747481] JFS: discard option not supported on device executing program [ 775.811744] JFS: discard option not supported on device executing program [ 775.851994] JFS: discard option not supported on device executing program [ 775.913942] JFS: discard option not supported on device executing program [ 775.982793] JFS: discard option not supported on device executing program [ 776.032293] JFS: discard option not supported on device [ 776.070293] JFS: discard option not supported on device executing program executing program [ 776.144796] JFS: discard option not supported on device executing program [ 776.204268] JFS: discard option not supported on device [ 776.260788] JFS: discard option not supported on device executing program [ 776.341759] JFS: discard option not supported on device executing program executing program [ 776.433330] JFS: discard option not supported on device [ 776.470466] JFS: discard option not supported on device executing program executing program [ 776.534054] JFS: discard option not supported on device executing program [ 776.591489] JFS: discard option not supported on device executing program [ 776.661327] JFS: discard option not supported on device executing program [ 776.720585] JFS: discard option not supported on device executing program [ 776.771477] JFS: discard option not supported on device executing program executing program [ 776.845651] JFS: discard option not supported on device executing program [ 776.905269] JFS: discard option not supported on device executing program [ 776.972239] JFS: discard option not supported on device [ 777.041699] JFS: discard option not supported on device executing program [ 777.123530] JFS: discard option not supported on device executing program executing program [ 777.194872] JFS: discard option not supported on device executing program executing program [ 777.259103] JFS: discard option not supported on device executing program [ 777.303296] JFS: discard option not supported on device executing program [ 777.345911] JFS: discard option not supported on device [ 777.381205] JFS: discard option not supported on device executing program executing program [ 777.470885] JFS: discard option not supported on device executing program [ 777.530574] JFS: discard option not supported on device [ 777.591739] JFS: discard option not supported on device executing program executing program [ 777.674271] JFS: discard option not supported on device executing program [ 777.720842] JFS: discard option not supported on device executing program [ 777.770615] JFS: discard option not supported on device executing program [ 777.841094] JFS: discard option not supported on device executing program [ 777.901253] JFS: discard option not supported on device executing program [ 777.963605] JFS: discard option not supported on device [ 778.033940] JFS: discard option not supported on device executing program executing program [ 778.113917] JFS: discard option not supported on device executing program [ 778.171351] JFS: discard option not supported on device executing program [ 778.230368] JFS: discard option not supported on device executing program [ 778.291070] JFS: discard option not supported on device [ 778.360380] JFS: discard option not supported on device executing program executing program [ 778.443440] JFS: discard option not supported on device executing program [ 778.501192] JFS: discard option not supported on device executing program [ 778.560424] JFS: discard option not supported on device executing program [ 778.621802] JFS: discard option not supported on device [ 778.680773] JFS: discard option not supported on device executing program executing program [ 778.764012] JFS: discard option not supported on device executing program [ 778.810870] JFS: discard option not supported on device executing program [ 778.870734] JFS: discard option not supported on device executing program [ 778.921694] JFS: discard option not supported on device executing program [ 778.991799] JFS: discard option not supported on device [ 779.057134] JFS: discard option not supported on device executing program executing program [ 779.139743] JFS: discard option not supported on device [ 779.181866] JFS: discard option not supported on device [ 779.201287] kasan: CONFIG_KASAN_INLINE enabled [ 779.206053] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 779.215022] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 779.221240] Modules linked in: [ 779.224407] CPU: 0 PID: 7972 Comm: syz-executor309 Not tainted 4.14.295-syzkaller #0 [ 779.232257] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 779.241599] task: ffff8880abea0480 task.stack: ffff888091ee0000 [ 779.247641] RIP: 0010:lbmStartIO+0x14a/0x490 [ 779.252018] RSP: 0018:ffff888091ee7af8 EFLAGS: 00010202 [ 779.257353] RAX: dffffc0000000000 RBX: ffff8880aa206500 RCX: 0000000000000003 [ 779.264597] RDX: 000000000000001c RSI: 0000000000000000 RDI: 00000000000000e0 [ 779.271838] RBP: ffff8880a31d9980 R08: 0000000000000001 R09: ffff8880a31d9980 [ 779.279079] R10: ffff8880a31d9a07 R11: 0000000000000000 R12: ffff8880b40ce040 [ 779.286321] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 779.293563] FS: 000055555687e300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 779.301759] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 779.307712] CR2: 0000555556887628 CR3: 00000000a5a5d000 CR4: 00000000003406f0 [ 779.314955] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 779.322201] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 779.329444] Call Trace: [ 779.332009] lbmWrite+0x254/0x380 [ 779.335437] lmNextPage.isra.0+0x263/0x700 [ 779.339645] lmWriteRecord+0x8b2/0xe30 [ 779.343508] ? mark_held_locks+0xa6/0xf0 [ 779.347543] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 779.352620] lmLogSync+0x126/0x660 [ 779.356132] ? lmWriteRecord+0xe30/0xe30 [ 779.360167] ? dqput+0x30/0x30 [ 779.363332] jfs_syncpt+0x66/0x70 [ 779.366757] jfs_sync_fs+0x80/0xa0 [ 779.370270] ? jfs_statfs+0x510/0x510 [ 779.374133] sync_filesystem+0xe2/0x230 [ 779.378081] generic_shutdown_super+0x70/0x370 [ 779.382642] kill_block_super+0x95/0xe0 [ 779.386595] deactivate_locked_super+0x6c/0xd0 [ 779.391237] deactivate_super+0x7f/0xa0 [ 779.395184] cleanup_mnt+0x186/0x2c0 [ 779.398872] task_work_run+0x11f/0x190 [ 779.402732] exit_to_usermode_loop+0x1ad/0x200 [ 779.407287] do_syscall_64+0x4a3/0x640 [ 779.411149] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 779.416309] RIP: 0033:0x7f5afac7b857 [ 779.419992] RSP: 002b:00007ffc3b09aa48 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 779.427677] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5afac7b857 [ 779.434924] RDX: 00007ffc3b09ab0a RSI: 000000000000000a RDI: 00007ffc3b09ab00 [ 779.442165] RBP: 00007ffc3b09ab00 R08: 00000000ffffffff R09: 00007ffc3b09a8e0 [ 779.449408] R10: 000055555687f683 R11: 0000000000000206 R12: 00007ffc3b09bb70 [ 779.456650] R13: 000055555687f5f0 R14: 00007ffc3b09aa70 R15: 000000000000003b [ 779.463895] Code: 48 c1 ea 03 80 3c 02 00 0f 85 06 03 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 20 49 8d bd e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d5 02 00 00 4d 8b ad e0 00 00 00 4d 39 ee 74 [ 779.482956] RIP: lbmStartIO+0x14a/0x490 RSP: ffff888091ee7af8 [ 779.489996] ---[ end trace 8749a8893e8ed122 ]--- [ 779.494752] Kernel panic - not syncing: Fatal exception [ 779.500274] Kernel Offset: disabled [ 779.503881] Rebooting in 86400 seconds..